Service request processing method, device and system

Abstract

A method, an apparatus, and a system for processing service requests are disclosed herein. The method includes: selecting a second Serving Gateway (SGW) if determining that no user-plane connection exists between an access network device and a first SGW after receiving a service request sent by User Equipment (UE) through the access network device, wherein the first SGW is a preselected SGW corresponding to the UE, and the second SGW has a user-plane connection with the access network device; and setting up a bearer on the second SGW When the UE sends a service request through an access network device which has no user-plane connection with the currently selected SGW, the embodiments of the present invention enable normal implementation of the uplink and downlink services requested by the UE, and avoid frequent relocation of the SGW when an idle UE moves at the border of the service area of the SGW

Description

technical field [0001] The present invention relates to the communication field, in particular to a service request processing method, device and system. Background technique [0002] In the process of network development towards broadband and mobility, the 3rd Generation Partnership Program (3rdGeneration Partnership Program, referred to as 3GPP) organization proposed the Long Term Evolution (LTE for short) scheme in the mobile access network The Evolved Universal Mobile Telecommunications System Territorial Radio Access Network (E-UTRAN) and the Mobile Core Network proposed the System Architecture Evolution (SAE) solution, namely the Evolved Packet Core. Network (Evolved Packet Core, referred to as EPC). [0003] In UTRAN (UMTS Territorial Radio Access Network, UMTS Terrestrial Radio Access Network for short), the location management of terminals can be performed by using service area (registration area), location area (LA) and routing area (Routing Area, RA for short); ...

AI Technical Summary

Problems solved by technology

[0007] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art: the location area (for example: TA) of the terminal corresponding to the existing location area list (for example: TA list) and the service area of ​​the S-GW are independent of each other, which leads to the fact that the location area (TA) in the location area list (TA list) assigned to the terminal by the mobile management device (MME or SGSN) does not necessarily completely belong to the service area of ​​the selected S-GW

If the location area (TA) in the location area list (TA list) allocated by the MME to the terminal does not completely belong to the service area of ​​the selected S-GW, there may be a problem that the access network device (eNB) and the selected S-GW The case where there is no user plane connection between GWs

When a terminal in an idle state moves to a certain location area (TA) in the location area list (TA list), and the access network device (eNB) serving the location area (TA) and the currently selected S-GW There is no user plane connection between them, the user initiates a service request service through the terminal, or the network side receives a downlink data packet and triggers the terminal to initiate a service request service, the user connects to the access network device (eNB) and the selected S-GW through the terminal The user plane connection cannot be established between them, resulting in the failure of the uplink and downlink services of the terminal

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